.center {
	text-align:center;
}
.center [class*="span"] {
	border:1px solid #DDD;
	margin-top:5px;
	margin-bottom:5px;
	padding-top:2px;
}
.center [class*="span"]:hover {
	background-color:#FCE6A6;
	border-color:#EFD27A;
}